nub

Etymology 1

Either directly from Middle Low German, or from knub, from a Middle Low German word (compare Low German Knubbel, Knobbel (“knot; lump”)). Compare knob.

noun

1. (obsolete) The innermost section of a chrysalis in a silk cocoon.
2. A small lump or knob.
3. The essence or core of an issue, argument etc.
   What do you think is the nub of the problem?
   But surely the males are no problem? Aha...no we're approaching the nub. 2000, Bill Oddie, Gripping Yarns, page 115
4. (slang) The clitoris.
   — and then rub her nub with the bridge of your nose, right where the nerve will drive her straight to the ceiling! 2007, Melissa MacNeal, Hot for It, page 198
   When he used his fingers to rub her nub, he didn't have to wait anymore. She exploded for the second time that morning,... 2008, Arianna Hart, A Man for Marley, page 82
   He stroked her, using her movements to increase the pressure on her nub, catching her between his fingers. 2010, Beverly Rae, Wild Cat, page 81
5. (computing, colloquial) A pointing stick.

verb

1. (baseball) To hit the ball weakly.
2. To push; to nudge.
3. To beckon.

Etymology 2

Variant spelling of noob.

noun

1. (Internet slang) Alternative spelling of noob.
   He can't even make himself a peanut butter and jelly sandwich? What a nub.